
Scientists have revealed that humans could face mass extinction in 250 million years due to extreme heat.
Supercomputer climate models suggest all mammals could be wiped out as temperatures reach 40C to 70C in the future.

Scientists have revealed that humans could face mass extinction in 250 million years due to extreme heat.
Supercomputer climate models suggest all mammals could be wiped out as temperatures reach 40C to 70C in the future.